ICM7242 ,Long Range Fixed Timerapplications.
ON/OFF Delay Timers
Batch Timer/Sequencers
Cycle Timers
Programmable Time ..
ICM7242CBA ,Long Range Fixed TimerICM7242November 1996 Long Range Fixed Timer
ICM7242IJA ,Fixed And Programmable Timer/Countersapplications and has a modulo 60 programmable
divider, producing time delays from 1 to 59 RC time
..
ICM7242IPA ,Long Range Fixed TimerGeneral Description
The Maxim ICM7240/50/60 are programmable timer/
counters and the Maxim ICM7 ..
ICM7243 ,LED Display Decoder Driver, 8-Character, Microprocessor Compatible, Alpha NumericFeatures Description• 14-Segment and 16-Segment Fonts with Decimal Point The ICM7243 is an 8-charac ..
ICM7243AIJL ,8-Character, Microprocessor- Compatible, LED Display Decoder DriverFeatures Description• 14-Segment and 16-Segment Fonts with Decimal Point The ICM7243 is an 8-charac ..
IDT74FCT16374CTPA , FAST CMOS 16-BIT REGISTER (3-STATE)
IDT74FCT16374CTPF , FAST CMOS 16-BIT REGISTER (3-STATE)
IDT74FCT16374ETPV , FAST CMOS 16-BIT REGISTER (3-STATE)
IDT74FCT16374TPA , FAST CMOS 16-BIT REGISTER (3-STATE)
IDT74FCT163827CPA , 3.3V CMOS 20-BIT BUFFER
IDT74FCT163827CPV , 3.3V CMOS 20-BIT BUFFER
ICM7242
8-Bit Binary, Programmable, RC Timer Counter
- General Descrip tion
The Maxim ICM7240/50/60 are programmable timer/
counters and the Maxim ICM7242 is a fixed timer/
counter. They require only 1201A of supply current,
while generating delays from microseconds to days.
Each device combines a counter with an internal
oscillator whose period is controlled by an external
resistor and capacitor. The oscillator can be inhibited
and an external clock applied to the TB I/O terminal.
The programmablecounters in the ICM7240/50/60 can
be programmed using thumbwheel switches, jumpers,
and analog switches.
The ICM7240 has an 8 bit programmable counter and
can generate time delays from 1 to 255 RC time
constants. The ICM7250 has a two digit programmable
BCD counter and can generatetime delays from 1 to 99
RC time constants, The ICM7260 is used for "real time"
applications and has a modulo 60 programmable
divider, producing time delays from 1 to 59 RC time
constants, The ICM7242 has an 8 bit fixed counter and
can generate a time delay of 1 and 128 RC time
constants. These four devices are easily cascaded and
can operate in either astable or monostable configura-
tions, using the on-chip control flip-flop with Trigger
and Reset inputs.
Applica tions
The iCM7240/42/50/60 family is suitable for a wide
variety of timing and control applications.
ON/OFF Delay Timers
Batch Timer/Sequencers
Cycle Timers
Program mable Timers
Frequency Synthesizers
Ultra-Long Time Delay Generators
- -----_ Typical Operating Circuit
I-99 Second Timer -lliil
-iT"" l
IVIAXI/M
ICM7250 _ J’sz
Boll g I
THUMBWNEEL - -
SWITEMES
OUTPUT
2AlAl24il 1)C I] AM]
Fixed And Programmable
T:mer/Coun ters
Features
. Improved Second Source! (See 3rd page for"Maxim
Advantage"'.")
. Low Supply Current: 12mm
' Timing from ps to Days
. Shutdown Current less than 10PA
O Programmable Fixed Count
. Cascadable for Long Range Timing
. Monostabie or Astable Operation
t Low Power CMOS
W _ Ordering Information
l" a; Fiat. REE FEEKAGE
iICM7240IPE -200C to 415cc 16 Lead PLASTIC DIP
|CM7240IJE -20''C to 185°C "6 Lead CERDIP
lCM7240C/D 0''C to '70''C Dice
ICM7242lPA 0°C to '85”C 8 Lead PLASTIC DIP
ICM72421JA -20°C w 435%: 8 Lead CERDIP
1 ICM7242C/D 0°C to -70'C Dice
Pcwzsoipe -20°C to '85'C 16 Lead PLASTIC I
lCM7250|JE -20°c lo ~ssnc 16 Lead CERDIP
ICM7250C/D 0°C to m70''C Dice
|CM7260|PE -20''C to 1350c 16 Lead PLASTIC
ICM7260lJE -20''C to oas‘ic 16 Lead CERDIP
1 ICM7260C/D occw virgc Dice _ 7
- - - Pin Configuration
Top View
-Ns3""
il' d LT] Til lm
+2 OUTPUT i: zM/ixuvu EBB
+128/256 OUTPUT [E 'CWW Elmicntn
GNU Li] E RESET
7250/69 IL41) -ur- BUFFEHED
i l Ii . 18 V’ HESET [7240)
I's t 2 LE] El
4 4 [I MAXI/M Lian Til I/0 CARRY COT
8 a DE 10/11/240 E R0 ' ”250/60!
- 10 m LL [CMqu E1 MOI]
10.: -, N 32 E ICM72GO Lr', TRIGGER
40 M LI TDJ RESET
L 80' 128 CE Ti Mil
"lCM7260--Oprs.r' C1rculi
The 'Max1m Advantage" angmhes an up9re0rsdquahty level Atno ad11111onai cost we allele secondrsource dewce- mar IS stmjisc'rtotntsfoliowireg guarallleed
valormance over temperature along wtth hymer test specihcmions on many key tparameters, and dewce enhancements when needed, ma! resuhr 1/1 unproved
performance withtsvtchangr'rsg the hmm/onairty
IVIIJ XI/VI
09/09/317/01731 W9!
Fixed and Programmable
Timer/Coun ters
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
Output Voltage
Input Voltage (Note 1) ICM7242
lCM7240/50/60. plns 2,3,8 ................... (Gnd-0.3V) to (V'02V)
pins10,11,12,13.14 ........... (Gnd-t13V) to N' +0.3V) Maximum Continuous Output
ICM7242 Current (each output; ......................... 50mA
pins 56.7.8 ................. (Gnd-O 3V) to N' *0.3V) Power Dissipatton ............................ 200mW
Output Voltage Derate at -2mW'°C above 25'C
|CM7240/50/60 Operating Temperature Range ............. 720°C to +85cC
pms 1,2.3,4.5.6.7.8 ................ (Gnd-0.3V) to '181/ Storage Temperature Range ............. -55'C to 425°C
pins14,15 ................... (Gnd-02V) to N' 0.3V) Lead Temperature (soldering, 10 seconds) .......... -3000C
Note 1: Due to the SCR structure inherent in the CMOS process. connecting any terminal (except puns 1 through 8 on the lCM7240/50/60)
ICM7240/42/50/60
to voltages greater than V‘ or less than Ground may cause destructive deVIce Iatchup For this reason. tt is recommended that no
Inputs from external sources be applied to the devtce before the supply IS established. In multiple supply systems. the supply to
ICM7240/42/50/60 should be turned on first. Pins 1 through 8 in the ICM7240/50/60 are open dram devices and are rated to
Withstand 18Volts wuth respect to ground (pin 9).
Stresses above those Msted under 'Absolute Maxtmum Rattngs" may cause permanent damage to the dance These are stress ratings only and {unchanal
operatton ot the dewce at these or any other condlllons above those tndtcated In the opelattonal secrtons of the speciftcarions ts not tmphed. Exposure to
absolute maX/mum rattng CDHGIUOIIS for extended psnods may affect dewce retrabrhm
ELECTRICAL CHARACTERISTICS
(V' -+5V, TA:*25”C, R:10k11. C=Ot1yF. unless otherwise specified.)
paRAMErin" I SYMBOL (SONDITIONS MIN. TYP. iiwmxfi UNITS l
, - - -Ir- 4* __
Guaranteed Supply Voltage V’ 2 16
Supply Current l' Reset 125
72405060 Operating. H = 10kt). C 7 0 mi: 300 700
Operattng. R = 1Mtl, C -" 0.1uF 120 500
_ TB Inhibited, RC Connected to GND 125
7242 l Operating, Fl 2 tom. (D 7 0.1,; 340 800
Operating. R : 1Mtl, C _- OttuF 220 600
TB Inhibited, RC Connected to GND L
Ylmtng Accuracy " 5
RC Oscrllator Ffequency Af/AT 1 (Exclusive at RC Drift) 250
Temperature Drift
l = 1 mA 3.5 4.2
T SOURCE
tme Base Output Voltage Vcrs l ISINK = 32 mA 025 0 6
Time Base Output 7 a
Leakage Current lrssus 1 RC Ground t X 25
Mod Voltage Leve, V 1 V‘ i 5V 315 V
724050760 MOD 1 t = 15V 11,0 v
V' -" 5V 1 1 6 2.0 v
Trigger Input Vo‘tage Vrms l V‘ =15V 3.5 4 5 V
v; ' 5V A 1 a 2 0 s)
Reset Input Vottage VRST V' --15V 1 2 7 4.0 V
_ Max Count Toggle Rate f, V - 2V 1 MHZ
7240. 7242 V = 5V Counter/Ch/ide, Mode 2 6 MHz
V = 15V 13 MHz
50% Duty Cycle Input thh Peak to Peak
Voltages Equal to V‘ and GND
Max Counter Toggle Rate, V' a 5V 1
7250.7260 i, (Counter/Diviaet Mode) 5 5 MHz
Max Count Toggte Rate - 1
740, 7250, 7260 f, Programmed Timer Divider Mode 00 _ kHz
All Outputs except TB Output 4 ,
Output Saturation Voltage VSM V’ - 5V. IOUT = 3 2 mA 0 22 0 l,
[ Output Leakage Current loo; V‘ - 5V, per Output 1 “A
Output Sourcing Current V' 7 5V A
7242 'SOURCE Terminals 2 s. 3. vom - IV 300 _ “
MIN Timing Capacitor C, 10 , pF
. V‘ L 5,5V 22M fy
Tummg Retystor Range Fl, V‘ C 16V 22M It
The eleclrtcal characterrstics above are a reproducron ota portion of InterSt/S copyrighted f 1983, 1984,! data book, Th/s Information does not constitute any
represer2tahon by Maxtm that )nlersrls products WIN perform In accordance mth these specrh'cattons, The Electncal Characlerrstics Table along wtth Ihc
Jescto0re excerpts from the manufacturers data sheet have been mcluded In tha data sheet solely for comparative purposes
http:/lwww.
lVI/J XI/VI
